package thread;

class Counter{
    public int count;

    synchronized public void increase(){
        count++;
    }
}
public class Demo13 {
    public static void main(String[] args) throws InterruptedException {
        Counter counter = new Counter();

        Thread t1 = new Thread(() ->{
           for (int i = 0; i < 50000; i++) {
               counter.increase();
           }
        });

        Thread t2 = new Thread(() ->{
            for (int i = 0; i < 50000; i++) {
                counter.increase();
            }
        });

        t1.start();
        t2.start();

        t1.join();
        t2.join();
        System.out.println("count: " + counter.count);
    }
}
